NASHVILLE, Tenn (WTHR) — A night of fun turned into a night of horror when a woman unknowingly stabbed her friend with a real knife.

Nashville Metro Police are investigating the stabbing that happened Friday night at Nashville Nightmare, a popular Halloween attraction in Madison, WBIR reported.

A group of friends, who attended the attraction, said someone who they believed worked there, handed one of them a knife and told her to stab him her friend with it.

That's when James Yochim saw blood gushing from his arm. He was taken to the hospital.

"No one wants to stab their friend," Yochim said. "I've been stabbed and I still can't even imagine what it's like to accidentally hurt your friend like that."

Nashville Nightmare said they are investigating the incident.

"As we have continued to review the information, we believe that an employee was involved in some way, and he has been placed on leave until we can determine his involvement," Nashville Nightmare organizers said in an emailed statement to WBIR.. "We are going over all of our safety protocols with all of our staff again, as the safety and security of all of our patrons is always our main concern."